clinic alone has seen well over 1000 severely malnourished children. the workers are struggling to cope. >> we really need to have enough supplies to be able to provide for these people, the children. we need vaccination, supplementary food, clean water, sanitation facilities. of course, fundamentally, we need food. >> the hardest part will be get food deep into the areas held by rebels linked with al qaeda. with war and now a famine spreading, this is a daunting challenge. >> in syria, opposition activists say security forces have been stepping up a major operation against anti- government protesters in the country's third biggest city of homs.